Send Rate Limiting is utilized to throttle, or spread out, the sending of an email campaign. By default our system spreads out the sending of the email campaign per minute. For example, if an email with a 100K recipient list spreads out over 6 hours, that means 278 messages per minute will be sent.
With the Send Rate feature you have the option to adjust your own send rate over a 24 hour span. You will find this option in "Schedule" tab when creating a new email campaign.
1. This feature is available upon request for clients on the Enterprise license.
2. Deferrals or unsuccessful initial deliveries will put the campaign in the default retry schedule. In addition, if an ESP adds their own throttling, the campaign could extend the time period set by this feature.
3. You can view your outgoing campaign log details to verify send rate limiting was used, see image: